Climatological Report (Monthly)
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000
CXUS53 KLOT 011635
CLMMDW

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1035 AM CST MON JAN 01 2024

...................................

...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2023...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1928 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             72   12/03/2012
 LOW             -20   12/24/1983
HIGHEST           60   12/25                          57  12/29
                                                          12/30
LOWEST            18   12/19                          -9  12/23
AVG. MAXIMUM    45.7               37.6     8.1     35.7
AVG. MINIMUM    35.1               25.0    10.1     23.2
MEAN            40.4               31.3     9.1     29.5
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                9.9    -9.9       10
DAYS MIN <= 32    13               23.7   -10.7       20
DAYS MIN <= 0      0                0.9    -0.9        3

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        7.21   1982
 MINIMUM        0.17   2017
TOTALS          2.67               1.79    0.88     1.67
DAILY AVG.      0.09               0.06    0.03     0.05
DAYS >= .01       10                9.5     0.5        6
DAYS >= .10        7                4.3     2.7        3
DAYS >= .50        1                1.1    -0.1        1
DAYS >= 1.00       0                0.4    -0.4        1
GREATEST
 24 HR. TOTAL   0.72   12/01 TO 12/01               1.15


DEGREE DAYS
HEATING TOTAL    755               1044    -289     1094
 SINCE 7/1      1707               2128    -421       MM
COOLING TOTAL      0                  0       0        0
 SINCE 1/1      1149               1112      37       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              9.2
HIGHEST WIND SPEED/DIRECTION    32/330    DATE  12/18
HIGHEST GUST SPEED/DIRECTION    45/340    DATE  12/18

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.77
NUMBER OF DAYS FAIR            2
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY         19

AVERAGE RH (PERCENT)     72

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       3
LIGHT RAIN               16     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                3     SLEET                      0
FOG                      17     FOG W/VIS <= 1/4 MILE      2
HAZE                      2

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$


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